Quick answers
- Is CVE-2026-4498 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-4498 being exploited in the wild.
- How severe is CVE-2026-4498?
- High severity, with a CVSS score of 7.7, published 8 April 2026.
- Which products and versions are affected?
- Elastic Kibana 8.0.0 to 8.19.13, 9.0.0 to 9.2.7, 9.3.0 to 9.3.2.
- Is there a fix for CVE-2026-4498?
- A patch was published on 2026-04-08. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-4498 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-4498?
- Check whether you run Elastic Kibana at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A vulnerability classified as Execution with Unnecessary Privileges (CWE-250) exists in Kibana's Fleet plugin. The issue resides in the debug route handlers (specifically /internal/fleet/debug/index and /internal/fleet/debug/saved_objects), which execute with elevated privileges. An authenticated attacker with Fleet sub-feature permissions (such as agents, policies, or settings management) can leverage these routes to bypass Elasticsearch Role-Based Access Control (RBAC) and read index data they are not authorized to access. The vulnerability is present in default configurations where Fleet is enabled. Elastic has released patches in versions 8.19.14, 9.2.8, and 9.3.3 to address this flaw.
Affected products
- Elastic Kibana 8.0.0 to 8.19.13, 9.0.0 to 9.2.7, 9.3.0 to 9.3.2
Timeline
- 2026-04-08: disclosed
- 2026-04-08: patched
- 2026-04-08: advisory